Window screen frame



Feb. 20, 1934. J, E, JOHNSON WINDOW SCREEN FRAME Filed March 3. 1932Ifi/venifow: (2271/1? Johnson My rJawuM- I flags.

Patented Feb. 20, 1934 UNITED STATES WINDOW SCREEN FRAME Joseph E.Johnson,

West Roxbury, Mass.

Application March 3, 1932. Serial No. 596,538

3 Ciaims.

This invention relates to rectangular, cornerjointed, wood frames, andis capable of general application to wood structures, although it isparticularly intended for use as a window-screen frame. The inventionaims to provide a frame all four members of which shall be alike inrespect to the formation of corresponding ends, so that the manufactureand assembling of the members shall be more rapid and convenient, ascompared with former frames and methods of manufacture, especially inrespect to the assembling and setting of the cutters of the machinewhich cuts the ends to be joined together in assembling the frame.

The invention will best be understood by ref-- erence to the followingdescription, when taken in connection with the accompanying drawing ofone specific embodiment thereof, while its scope will be pointed outmore particularly in the appended claims.

In the drawing:

Fig. 1 is an elevation of a window-screen having a frame embodying theinvention;

Fig. 2 is a plan of one of the four like members, the one shown beingthat which is at the top in Fig. 1;

Fig. 3 is a front elevation of the same;

Fig. 4 is a perspective View of one of the four like corners separated,the one shown being the upper left-hand corner considered in respect toFig. 1; and

Fig. 5 is a perspective view of another of the four like cornersseparated, the one shown being the lower left-hand corner considered inrespect to Fig. 1.

Referring to the drawing, and to the embodiment of the inventionillustrated therein, there is shown a window-screen having a framecomprising four members 6, all of which are alike in respect to theformation of their ends where they are joined together; in fact, allfour members may be said to be identical, except perhaps in length, itbeing understood of course that if the frame should happen to be square,all four members will be precisely alike, even as to length. Each of thefour members is provided with rabbets or channels 7, to receive themargin of wire screen cloth 8, which is held in place by strips 9 mitredtogether at the corners.

Considering one of the four identical corners, and referring to theupper left-hand corner in respect to Fig. 1, the upper horizontal member6 is out to present an open mortise 10,

which receives a tenon 11 of the left-hand vertical member, and theupper horizontal member is cut to provide a recess or channel 12, whichreceives a tenon or tongue 13 of the left-hand vertical member. In likemanner, the lower end of the left-hand vertical member (see Fig. 5) iscut to provide an open mortise 10 to receive a tenon 11 of the lowerhorizontal member, and the lower end of the left-hand vertical member 6is cut to present a recess or channel 12 to receive a tenon or tongue13, presented by the lower horizontal member 6. As herein shown, thedepth of each recess 12 measured from the adjacent face of the frame isthe same as the depth of the rabbet '7, measured from said face.

This description applies to all four corners, as will be evident from acomparison of Figs. 1, 2 and 3. Thus it is apparent that both ends ofone member are not alike, but that all of the members are alike inrespect to the formation of corresponding ends. This fact results ingreater convenience in manufacture, as compared with a frame in whichboth ends of one member are alike, and two opposite members are alike,but differ from the remaining two opposite members. This effectsprimarily the setting of the cutters of the machine, and secondarily,the convenience in assembling. After the members have been assembled,they are conveniently secured together in the usual manner, as by cornerpins 14.

Having thus described one embodiment of the invention, but withoutlimiting myself thereto, what I claim and desire by Letters Patent tosecure is:

1. In a frame, the combination of four members constituting the foursides of the frame. all four members being alike in respect to theformation of corresponding, non-adjacent ends, said members beingjointed together at all four corners by like joints, each member beingprovided at each end with two tenons whose ends are perpendicular to thelongitudinal edges of such member on which they are formed, said tenonsbeing separated from each other by an corners by like joints, eachmember being provided at each end with two tenons whose ends areperpendicular to the longitudinal edges of such member on which they areformed, said tenons being separated from each other by an internalmortise, and there being at each end an external recess presenting ashoulder perpendicular to said edges, the ends of each member differingfrom each other in that said external recesses are on opposite sides,respectively, of said member, each member being provided with a rabbetalong its inner edge on one face of the frame, said rabbet being thesame depth as said external recess measured from said face.

3. In a frame, the combination of four members constituting the foursides of the frame, all four members being alike in respect to theformation of corresponding, non-adjacent ends, the ends of each memberdiffering from each other,

said members being jointed together at all four corners by like joints,each member being provided at each end with two tenons whose ends areperpendicular to the longitudinal edges of such member on which they areformed, said tenons being separated from each other by an internalmortise, and there being an external recess presenting a shoulderperpendicular to said edges, each member being provided with a rabbetalong its inner edge on one face of the frame, said rabbet being thesame depth as said external recess measured from said face, said rabbetcommunicating with the external recess at one end and with the internalmortise at the other end, the tenon adjacent said face and adjacent suchother end being narrower than the adjacent tenon at such other end bythe Width of said rabbet.

JOSEPH E. JOHNSON.

